// /src/pages/hot/hot.vue
<script setup lang="ts">
// 热门推荐页 标题和url
import { onLoad, onReady } from '@dcloudio/uni-app'
import { getHotRecommendAPI } from '@/pages/service/hot'
import { ref } from 'vue'
import type { SubTypeItem } from '@/types/hot'

const hotMap = [
  { type: '1', title: '特惠推荐', url: '/hot/preference' },
  { type: '2', title: '爆款推荐', url: '/hot/inVogue' },
  { type: '3', title: '一站买全', url: '/hot/oneStop' },
  { type: '4', title: '新鲜好物', url: '/hot/new' },
]

///////////////////////////////////////////////////////////////////////////////////获取页面的传递的数据
//uniapp 获取页面传递参数的写法
const query = defineProps<{
  type:string
}>()
//判断type值实现跳转对应的页面
const currrUrlMap = hotMap.find((v) => v.type === query.type)
//动态设置标题
uni.setNavigationBarTitle({ title : currrUrlMap!.title})


/////////////////////////////////////////////////////////////////////////////////////获取热门推荐的数据api
//调用封装好的api
//这里为什么可以获取到对应的url呢?因为query获取到页面传递过来的type,根据type可以找到对应的url
const getHotRecommendData = async () => {
  const result = await getHotRecommendAPI(currrUrlMap!.url,{
    // 技巧：环境变量，开发环境，修改页面初始值方便测试分页结束,
    page: import.meta.env.DEV ? 33 : 1,
    pageSize:10,
  })
  //封装推荐封面图数据
  bannerPicture.value = result.result.bannerPicture
  //封装热门推荐商品
  subTypes.value = result.result.subTypes
}
//页面加载调用
onLoad( () => {
  getHotRecommendData()
})

////////////////////////////////////////////////////////////////////// 渲染页面
//定义变量接收推荐封面图数据
const bannerPicture = ref('')
//定义变量接收热门推荐商品,& 交叉类型在原有的对象中添加字段,finish 表示用作与标记结束
const subTypes = ref<(SubTypeItem & {finish?:boolean}) []>([])

//////////////////////////////////////////////////////////////////////tab交互
//定义变量设置热门推荐高亮下标
const activeIndex = ref(0)

/////////////////////////////////////////////////////////////////////分页加载
//绑定容器滚动触底事件
const onScrolltolower = async () => {
  //获取当前选项，这里是通过热门推荐高亮下标
  const currSubType = subTypes.value[activeIndex.value]
  //分页条件,当前页码小于总页码继续累加
  if(currSubType.goodsItems.page < currSubType.goodsItems.pages){
    //当前选项页码累加
    currSubType.goodsItems.page++
  }else{
    // 当前页码大于总页码继续累加
    //标记结束,true -- 没有更多数据了，false -- 正在加载...
    currSubType.finish = true
    //退出并轻提示
    return uni.showToast({ icon: 'none',title:'没有更多数据了~' })
  }

  //调用api传参
  const result = await getHotRecommendAPI(currrUrlMap!.url,{
    subType:currSubType.id,
    page:currSubType.goodsItems.page,
    pageSize:currSubType.goodsItems.pageSize
  })
  // console.log(result)
  //新的选项列表
  const newSubTypes = result.result.subTypes[activeIndex.value]
  //数组追加，一个数组添加到另一个数组需要展开
  currSubType.goodsItems.items.push(...newSubTypes.goodsItems.items)
}


</script>

<template>
  <view class="viewport">
    <!-- 推荐封面图 -->
    <view class="cover">
      <image :src="bannerPicture"></image>
    </view>
    <!-- 推荐选项,active属性是小程序设置设置下标高亮 -->
    <view class="tabs">
      <text
        v-for="(item,index) in subTypes" :key="item.id"
        class="text"
        :class="{active:index === activeIndex}"
        @tap="activeIndex = index"
      >
        {{item.title}}
      </text>
    </view>
    <!--
      推荐列表,这里渲染的是列表的滚动容器,v-show -- 判断下标相同则显示对应的数据
      @scrolltolower="onScrolltolower" --  绑定容器触底事件
    -->
    <scroll-view
      v-for="(item,index) in subTypes" :key="item.id"
      v-show="activeIndex === index"
      scroll-y
      class="scroll-view"
      @scrolltolower="onScrolltolower"
    >
      <view class="goods">
<!--        这里渲染的是列表数据-->
        <navigator
          hover-class="none"
          class="navigator"
          v-for="goods in item.goodsItems.items"
          :key="goods.id"
          :url="`/pages/goods/goods?id=${goods.id}`"
        >
          <image
            class="thumb"
            :src="goods.picture"
          ></image>
          <view class="name ellipsis">{{goods.name}}</view>
          <view class="price">
            <text class="symbol">¥</text>
            <text class="number">{{goods.price}}</text>
          </view>
        </navigator>
      </view>
      <view class="loading-text">
        {{item.finish ? '没有更多数据了' : ' 正在加载...'}}
      </view>
    </scroll-view>
  </view>
</template>

<style lang="scss">
page {
  height: 100%;
  background-color: #f4f4f4;
}
.viewport {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 180rpx 0 0;
  position: relative;
}
.cover {
  width: 750rpx;
  height: 225rpx;
  border-radius: 0 0 40rpx 40rpx;
  overflow: hidden;
  position: absolute;
  left: 0;
  top: 0;
}
.scroll-view {
  flex: 1;
}
.tabs {
  display: flex;
  justify-content: space-evenly;
  height: 100rpx;
  line-height: 90rpx;
  margin: 0 20rpx;
  font-size: 28rpx;
  border-radius: 10rpx;
  box-shadow: 0 4rpx 5rpx rgba(200, 200, 200, 0.3);
  color: #333;
  background-color: #fff;
  position: relative;
  z-index: 9;
  .text {
    margin: 0 20rpx;
    position: relative;
  }
  .active {
    &::after {
      content: '';
      width: 40rpx;
      height: 4rpx;
      transform: translate(-50%);
      background-color: #27ba9b;
      position: absolute;
      left: 50%;
      bottom: 24rpx;
    }
  }
}
.goods {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  padding: 0 20rpx 20rpx;
  .navigator {
    width: 345rpx;
    padding: 20rpx;
    margin-top: 20rpx;
    border-radius: 10rpx;
    background-color: #fff;
  }
  .thumb {
    width: 305rpx;
    height: 305rpx;
  }
  .name {
    height: 88rpx;
    font-size: 26rpx;
  }
  .price {
    line-height: 1;
    color: #cf4444;
    font-size: 30rpx;
  }
  .symbol {
    font-size: 70%;
  }
  .decimal {
    font-size: 70%;
  }
}

.loading-text {
  text-align: center;
  font-size: 28rpx;
  color: #666;
  padding: 20rpx 0 50rpx;
}
</style>
